[0.9.2] Replace selected text with pasted text causes exception

[xweichen]

Replace selected text with pasted text causes exception aslo happen in 0.9.2

test steps：
1、input a\nb\nc

2、ctrl+a select all and ctrl+c to copy all
3、select from end to start，select c\nb and ctrl+v

4、ctrl+a select all and ctrl+v

exception like this：

Exception in thread "JavaFX Application Thread" java.lang.IndexOutOfBoundsException: [1, 0) is not a valid range within [0, 3)
at org.reactfx.util.Lists.checkRange(Lists.java:128)
at org.reactfx.util.Lists.checkRange(Lists.java:123)
at org.reactfx.util.FingerTree$Branch$1.subList(FingerTree.java:489)
at org.reactfx.collection.MaterializedListModification.lambda$0(MaterializedListModification.java:30)
at org.reactfx.util.Tuple2.map(Tuple2.java:31)
at org.reactfx.collection.MaterializedListModification.trim(MaterializedListModification.java:23)
at org.fxmisc.richtext.model.GenericEditableStyledDocumentBase$ParagraphList.lambda$observeInputs$0(GenericEditableStyledDocumentBase.java:46)
at org.reactfx.util.NonAccumulativeStreamNotifications.lambda$0(NotificationAccumulator.java:134)

[Jugen]

@xweichen thanks for reporting.

Observations I've made so far is that the exception only happens under the following conditions:

1. Two successive pastes with no edits in between
   (if edited then ctrl+z removing the edits restores the exception condition)
2. The first paste must be at the very end of the document
3. The second paste must be to replace all text

[Jugen]

The following code produces the reported exception:

String test = "a\n";
area.replaceText( test );
area.appendText( test +"d" );
area.replaceText( test +"d" );

or

String test = "a\n";
area.replaceText( test );
area.insertText( 0, test +"d\n" );
area.replaceText( test );

[samhutchins]

This is still a problem in 0.10.3

import org.fxmisc.richtext.CodeArea;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class FooBar
{
    public static void main(String[] args)
    {
        Application.launch(MainWindow.class);
    }

    public static class MainWindow extends Application
    {
        @Override
        public void start(final Stage primaryStage)
        {
            final CodeArea area = new CodeArea();

            final Button button = new Button("Throw exception");
            button.setOnAction(e ->
            {
                String test = "a\n";
                area.replaceText( test );
                area.appendText( test +"d" );
                area.replaceText( test +"d" );
            });


            final BorderPane root = new BorderPane(area);
            root.setBottom(button);
            final Scene scene = new Scene(root, 600, 400);
            primaryStage.setScene(scene);
            primaryStage.show();
        }
    }
}

If you press the "Throw exception" button, it performs the same steps as outlined by @Jugen here and it throws the same exception. I can also reproduce by hand

[Jugen]

I've checked into this with JRE 8 and JRE 11 using your code with 0.10.3 and it unfortunately doesn't throw the exception ? Could you double check that your classpath is indeed using the latest RichTextFX jar and if so then could you please provide additional information that might help.

[samhutchins]

My apologies, I guess my IDE didn't pickup the change in the pom.xml or something was cached, I can't reproduce with 0.10.3